| 1 |
/** |
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* @package VikBooking |
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* @subpackage vikDotsSlider |
| 4 |
* @version 1.2.0 |
| 5 |
* @author Alessio Gaggii - E4J srl |
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* @copyright Copyright (C) 2021 E4J srl. All rights reserved. |
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* @license GNU General Public License version 2 or later; see LICENSE |
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* @link https://e4j.com - https://vikwp.com |
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*/ |
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|
| 11 |
(function($) { |
| 12 |
|
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var VikDotsSlider = function(elem, options) { |
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|
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this.sliderElement = elem; |
| 16 |
this.sliderDataName = 'vik-dots-slider-id'; |
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this.sliderIdPrefix = 'vik-dots-slider-id-'; |
| 18 |
this.xDown = null; |
| 19 |
this.yDown = null; |
| 20 |
this.preloadedImages = []; |
| 21 |
this.currentSlide = 0; |
| 22 |
this.previousSlide = 0; |
| 23 |
this.sliderContainer = null; |
| 24 |
|
| 25 |
this.defaultSettings = { |
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images: [], |
| 27 |
captions: [], |
| 28 |
containerClass: 'vik-dots-slider-container', |
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containerHeight: '200px', |
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innerClass: 'vik-dots-slider-inner', |
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slidesClass: 'vik-dots-slider-slides', |
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slideClass: 'vik-dots-slider-slide', |
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captionClass: 'vik-dots-slider-slide-caption', |
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slideStartClass: 'vik-dots-slider-slide-start', |
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slideLeftCurrClass: 'vik-dots-slider-slide-leftcurr', |
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slideLeftNextClass: 'vik-dots-slider-slide-leftnext', |
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slideRightNextClass: 'vik-dots-slider-slide-rightnext', |
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slideRightCurrClass: 'vik-dots-slider-slide-rightcurr', |
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dotsContainerClass: 'vik-dots-slider-dots', |
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dotClass: 'vik-dots-slider-dot', |
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activeDotClass: 'vik-dots-slider-dot-active', |
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hasmoreDotClass: 'vik-dots-slider-dot-hasmore', |
| 43 |
maxDots: 5, |
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navButContainerClass: 'vik-dots-slider-navbuttons', |
| 45 |
navButClass: 'vik-dots-slider-navbutton', |
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navButPrevClass: 'vik-dots-slider-navbutton-prev', |
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navButNextClass: 'vik-dots-slider-navbutton-next', |
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navButPrevContent: '<', |
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navButNextContent: '>', |
| 50 |
enableGestures: true, |
| 51 |
onDisplaySlide: function() {}, |
| 52 |
}; |
| 53 |
|
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this.settings = $.extend(true, {}, this.defaultSettings, options); |
| 55 |
|
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this.options = function(options) { |
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return options ? $.extend(true, this.settings, options) : this.settings; |
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}; |
| 59 |
|
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this.countSlides = function() { |
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return this.settings.images.length; |
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}; |
| 63 |
|
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this.generateSliderId = function() { |
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return ((parseInt(Math.random() * 1000)) + ''); |
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}; |
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|
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this.goToSlide = function(e) { |
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if (e) { |
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e.preventDefault(); |
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} |
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// retrieve dot from data passed to event handler |
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var dot = jQuery(e.data.dot); |
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var gotopos = dot.data('pos'); |
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if (gotopos == null || gotopos == this.currentSlide) { |
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return false; |
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} |
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if (gotopos > this.currentSlide) { |
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// show requested slide navigating left |
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this.showSlide((gotopos + 1)); |
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} else { |
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// show requested slide navigating right |
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this.showSlide((gotopos + 1), true); |
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} |
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}; |
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|
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this.prevSlide = function(e) { |
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if (e) { |
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e.preventDefault(); |
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} |
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var gotopos = this.currentSlide - 1; |
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if (gotopos < 0) { |
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gotopos = (this.countSlides() - 1); |
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} else if (gotopos >= this.countSlides()) { |
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gotopos = 0; |
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} |
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if (gotopos == this.currentSlide) { |
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return false; |
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} |
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if (gotopos > this.currentSlide) { |
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// show requested slide navigating left |
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this.showSlide((gotopos + 1)); |
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} else { |
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// show requested slide navigating right |
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this.showSlide((gotopos + 1), true); |
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} |
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}; |
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|
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this.nextSlide = function(e) { |
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if (e) { |
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e.preventDefault(); |
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} |
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var gotopos = this.currentSlide + 1; |
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if (gotopos < 0) { |
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gotopos = (this.countSlides() - 1); |
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} else if (gotopos >= this.countSlides()) { |
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gotopos = 0; |
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} |
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if (gotopos == this.currentSlide) { |
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return false; |
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} |
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if (gotopos > this.currentSlide) { |
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// show requested slide navigating left |
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this.showSlide((gotopos + 1)); |
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} else { |
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// show requested slide navigating right |
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this.showSlide((gotopos + 1), true); |
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} |
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}; |
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|
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this.getSlide = function(i) { |
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if (this.sliderContainer == null) { |
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return []; |
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} |
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|
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return this.sliderContainer.find('.' + this.settings.slideClass + '[data-pos="' + i + '"]'); |
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}; |
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|
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this.getDot = function(i) { |
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if (this.sliderContainer == null) { |
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return []; |
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} |
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|
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return this.sliderContainer.find('.' + this.settings.dotClass + '[data-pos="' + i + '"]'); |
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}; |
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|
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this.getDotByIndex = function(i) { |
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if (this.sliderContainer == null) { |
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return []; |
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} |
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|
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return this.sliderContainer.find('.' + this.settings.dotClass).eq(i); |
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}; |
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|
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this.showSlide = function(pos, right) { |
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if (this.sliderContainer == null) { |
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return false; |
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} |
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|
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var animatingClasses = [ |
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this.settings.slideLeftCurrClass, |
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this.settings.slideLeftNextClass, |
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this.settings.slideRightNextClass, |
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this.settings.slideRightCurrClass, |
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]; |
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var removeClasses = animatingClasses.join(' '); |
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|
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if (!pos) { |
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pos = ((this.currentSlide + 1) < this.countSlides() ? (this.currentSlide + 2) : 1); |
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} |
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|
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--pos; |
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// update previous slide |
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this.getSlide(this.previousSlide).removeClass(removeClasses); |
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|
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if (!right) { |
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this.getSlide(pos).removeClass(removeClasses).addClass(this.settings.slideLeftNextClass); |
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this.getSlide(this.currentSlide).removeClass(removeClasses).addClass(this.settings.slideLeftCurrClass); |
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} else { |
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this.getSlide(pos).removeClass(removeClasses).addClass(this.settings.slideRightNextClass); |
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this.getSlide(this.currentSlide).removeClass(removeClasses).addClass(this.settings.slideRightCurrClass); |
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} |
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|
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this.previousSlide = this.currentSlide; |
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this.currentSlide = pos; |
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|
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var currentDot = this.getDot(this.currentSlide); |
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if (currentDot.length) { |
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currentDot.addClass(this.settings.activeDotClass); |
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} |
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var prevDot = this.getDot(this.previousSlide); |
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if (prevDot.length) { |
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prevDot.removeClass(this.settings.activeDotClass); |
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} |
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|
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// update dots pos attributes in case max dots was reached |
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if (this.countSlides() > this.settings.maxDots && this.settings.maxDots > 1) { |
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// dots cannot represent all slides |
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var isFirstSlide = (this.currentSlide === 0); |
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var isLastSlide = ((this.currentSlide + 1) == this.countSlides()); |
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|
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if (isFirstSlide) { |
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// renumber dots from the beginning |
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for (var d = 0; d < this.settings.maxDots; d++) { |
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var dot = this.getDotByIndex(d); |
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if (dot.length) { |
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dot.data('pos', d).attr('data-pos', d); |
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if (d === 0) { |
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dot.addClass(this.settings.activeDotClass).removeClass(this.settings.hasmoreDotClass); |
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} else { |
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dot.removeClass(this.settings.activeDotClass); |
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if (d === (this.settings.maxDots - 1)) { |
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dot.addClass(this.settings.hasmoreDotClass); |
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} |
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} |
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} |
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} |
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} else if (isLastSlide) { |
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// renumber dots from the end |
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var missingdots = (this.countSlides() - this.settings.maxDots); |
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for (var d = 0; d < this.settings.maxDots; d++) { |
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var dot = this.getDotByIndex(d); |
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if (dot.length) { |
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var newpos = d + missingdots; |
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dot.data('pos', newpos).attr('data-pos', newpos); |
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if (d === (this.settings.maxDots - 1)) { |
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dot.addClass(this.settings.activeDotClass).removeClass(this.settings.hasmoreDotClass); |
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} else { |
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dot.removeClass(this.settings.activeDotClass); |
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if (d === 0) { |
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dot.addClass(this.settings.hasmoreDotClass); |
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} |
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} |
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} |
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} |
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} else { |
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// we are in the middle, renumber dots |
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var dotselindex = (this.currentSlide + 1) < this.settings.maxDots ? this.currentSlide : (this.settings.maxDots - 2); |
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var dotaddpos = (this.currentSlide + 1) < this.settings.maxDots ? 0 : (this.currentSlide - this.settings.maxDots + 2); |
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var dothasmoreindex = (this.currentSlide + 1) >= this.settings.maxDots ? [0, dotselindex + 1] : [-1, this.settings.maxDots - 1]; |
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for (var d = 0; d < this.settings.maxDots; d++) { |
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var dot = this.getDotByIndex(d); |
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if (dot.length) { |
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var newpos = d + dotaddpos; |
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dot.data('pos', newpos).attr('data-pos', newpos); |
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if (d == dotselindex) { |
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dot.addClass(this.settings.activeDotClass); |
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} else { |
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dot.removeClass(this.settings.activeDotClass); |
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} |
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if (d === dothasmoreindex[0] || d === dothasmoreindex[1]) { |
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dot.addClass(this.settings.hasmoreDotClass); |
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} else { |
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dot.removeClass(this.settings.hasmoreDotClass); |
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} |
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} |
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} |
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} |
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} |
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}; |
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|
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this.generateNavButtons = function() { |
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var navbuttons = $('<div></div>').addClass(this.settings.navButContainerClass); |
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if (this.countSlides() < 2) { |
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return navbuttons; |
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} |
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var navprev = $('<span></span>').addClass(this.settings.navButClass + ' ' + this.settings.navButPrevClass).append(this.settings.navButPrevContent).on('click', this.prevSlide.bind(this)); |
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var navnext = $('<span></span>').addClass(this.settings.navButClass + ' ' + this.settings.navButNextClass).append(this.settings.navButNextContent).on('click', this.nextSlide.bind(this)); |
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navbuttons.append(navprev).append(navnext); |
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|
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return navbuttons; |
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}; |
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|
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this.generateDots = function() { |
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var dots = $('<div></div>').addClass(this.settings.dotsContainerClass); |
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var tot_slides = this.countSlides(); |
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if (this.settings.maxDots < 1 || tot_slides < 2) { |
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return dots; |
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} |
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var canfitall = (this.settings.maxDots >= tot_slides); |
| 281 |
for (var i = 0; i < tot_slides; i++) { |
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// generate dot, set pos attribute |
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var dot = $('<span></span>').addClass(this.settings.dotClass).data('pos', i).attr('data-pos', i); |
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// define click handler by passing the collection and by binding thisArg to the class instance |
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dot.on('click', {dot: dot}, this.goToSlide.bind(this)) |
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if (i == this.currentSlide) { |
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dot.addClass(this.settings.activeDotClass); |
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} |
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if (!canfitall && i == (this.settings.maxDots - 1)) { |
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dot.addClass(this.settings.hasmoreDotClass); |
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} |
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dots.append(dot); |
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if ((i + 1) == this.settings.maxDots) { |
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break; |
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} |
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} |
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|
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return dots; |
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}; |
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|
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this.generateSlides = function() { |
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var slides = $('<div></div>').addClass(this.settings.slidesClass); |
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for (var i = 0; i < this.countSlides(); i++) { |
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var slide = $('<div></div>').data('pos', i).attr('data-pos', i).addClass(this.settings.slideClass); |
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if (i == this.currentSlide) { |
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slide.addClass(this.settings.slideStartClass); |
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} |
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if (this.settings.captions.hasOwnProperty(i) && this.settings.captions[i].length) { |
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var caption = $('<span></span>').addClass(this.settings.captionClass).text(this.settings.captions[i]); |
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slide.append(caption); |
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} |
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var photo = $('<img src="' + this.settings.images[i] + '" />'); |
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slide.append(photo); |
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|
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// fire onDisplaySlide callback by passing the whole slide content |
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this.settings.onDisplaySlide.call(slide); |
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|
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// append slide |
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slides.append(slide); |
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} |
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|
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return slides; |
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}; |
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|
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this.sliderTouches = function(e) { |
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if (!this.settings.enableGestures) { |
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return false; |
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} |
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if (e.touches) { |
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// JS |
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return e.touches; |
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} |
| 333 |
if (e.originalEvent.touches) { |
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// jQuery |
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return e.originalEvent.touches; |
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} |
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return false; |
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}; |
| 339 |
|
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this.sliderTouchStart = function(e) { |
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var firstTouch = this.sliderTouches(e)[0]; |
| 342 |
if (firstTouch === false) { |
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return; |
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} |
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this.xDown = firstTouch.clientX; |
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this.yDown = firstTouch.clientY; |
| 347 |
}; |
| 348 |
|
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this.sliderTouchMove = function(e) { |
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if (!this.xDown || !this.yDown || this.countSlides() < 2) { |
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return; |
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} |
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// register touch positions |
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var xUp = e.touches[0].clientX; |
| 355 |
var yUp = e.touches[0].clientY; |
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var xDiff = this.xDown - xUp; |
| 357 |
var yDiff = this.yDown - yUp; |
| 358 |
|
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// detect gesture type |
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if (Math.abs(xDiff) > Math.abs(yDiff)) { |
| 361 |
if (xDiff > 0) { |
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// left swipe, navigate forward |
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this.nextSlide(e); |
| 364 |
} else { |
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// right swipe, navigate backward |
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this.prevSlide(e); |
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} |
| 368 |
} else { |
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if (yDiff > 0) { |
| 370 |
// up swipe is ignored |
| 371 |
} else { |
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// down swipe is ignored |
| 373 |
} |
| 374 |
} |
| 375 |
|
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// reset vars to handle the next touch gesture |
| 377 |
this.xDown = null; |
| 378 |
this.yDown = null; |
| 379 |
}; |
| 380 |
|
| 381 |
this.registerGestures = function(elem) { |
| 382 |
if (!elem) { |
| 383 |
return; |
| 384 |
} |
| 385 |
elem.addEventListener('touchstart', this.sliderTouchStart.bind(this), false); |
| 386 |
elem.addEventListener('touchmove', this.sliderTouchMove.bind(this), false); |
| 387 |
}; |
| 388 |
|
| 389 |
this.preloadURLs = function(urls) { |
| 390 |
if (urls == null || !urls.length) { |
| 391 |
return; |
| 392 |
} |
| 393 |
for (var i = 0; i < urls.length; i++) { |
| 394 |
var photoslide = (new Image()).src = urls[i]; |
| 395 |
this.preloadedImages.push(photoslide); |
| 396 |
} |
| 397 |
}; |
| 398 |
|
| 399 |
this.display = function() { |
| 400 |
// update global vars |
| 401 |
this.currentSlide = 0; |
| 402 |
this.previousSlide = (this.countSlides() - 1); |
| 403 |
|
| 404 |
// if an instance is already present in the current element, remove it |
| 405 |
if (this.sliderElement.find('.' + this.settings.containerClass).length) { |
| 406 |
this.sliderElement.find('.' + this.settings.containerClass).remove(); |
| 407 |
} |
| 408 |
|
| 409 |
// generate slider random ID |
| 410 |
var sliderId = this.generateSliderId(); |
| 411 |
|
| 412 |
// generate slider container by updating global var |
| 413 |
this.sliderContainer = $('<div></div>').addClass(this.settings.containerClass).data(this.sliderDataName, sliderId).attr('id', this.sliderIdPrefix + sliderId); |
| 414 |
|
| 415 |
// register gesture events for mobiles |
| 416 |
this.registerGestures(this.sliderContainer[0]); |
| 417 |
|
| 418 |
// builder slider inner |
| 419 |
var inner = $('<div></div>').addClass(this.settings.innerClass).css('height', this.settings.containerHeight); |
| 420 |
|
| 421 |
// build slider container |
| 422 |
this.sliderContainer.append( |
| 423 |
inner.append( |
| 424 |
this.generateSlides().append( |
| 425 |
this.generateNavButtons() |
| 426 |
) |
| 427 |
).append( |
| 428 |
this.generateDots() |
| 429 |
) |
| 430 |
); |
| 431 |
|
| 432 |
// append slider to current selector |
| 433 |
this.sliderElement.append(this.sliderContainer); |
| 434 |
}; |
| 435 |
|
| 436 |
this.update = function() { |
| 437 |
this.destroy(); |
| 438 |
this.display(); |
| 439 |
}; |
| 440 |
|
| 441 |
this.destroy = function() { |
| 442 |
this.sliderContainer.remove(); |
| 443 |
}; |
| 444 |
|
| 445 |
this.preloadImages = function(gallery) { |
| 446 |
gallery = gallery[0]; |
| 447 |
if (gallery == null) { |
| 448 |
return false; |
| 449 |
} |
| 450 |
|
| 451 |
var preloadQueue = {}; |
| 452 |
|
| 453 |
for (var gallery_id in gallery) { |
| 454 |
if (!gallery.hasOwnProperty(gallery_id)) { |
| 455 |
continue; |
| 456 |
} |
| 457 |
if (typeof gallery[gallery_id] == 'string' && gallery[gallery_id].indexOf('http') >= 0) { |
| 458 |
// we have an array of photo URLs |
| 459 |
var photoslide = (new Image()).src = gallery[gallery_id]; |
| 460 |
this.preloadedImages.push(photoslide); |
| 461 |
continue; |
| 462 |
} |
| 463 |
if (typeof gallery[gallery_id] == 'object' && gallery[gallery_id].length) { |
| 464 |
// we have a gallery object with the photos of each room so we queue the preloading |
| 465 |
for (var i = 0; i < gallery[gallery_id].length; i++) { |
| 466 |
if (!preloadQueue.hasOwnProperty(i)) { |
| 467 |
preloadQueue[i] = []; |
| 468 |
} |
| 469 |
// push the photo url for later loading |
| 470 |
preloadQueue[i].push(gallery[gallery_id][i]); |
| 471 |
} |
| 472 |
} |
| 473 |
} |
| 474 |
|
| 475 |
// if some preloading was queued, define the loading intervals |
| 476 |
var queue_timer = 0; |
| 477 |
for (var i in preloadQueue) { |
| 478 |
if (!preloadQueue.hasOwnProperty(i)) { |
| 479 |
continue; |
| 480 |
} |
| 481 |
// schedule preloading with timeout |
| 482 |
setTimeout(this.preloadURLs.bind(this, preloadQueue[i]), queue_timer); |
| 483 |
// increase timer for next scheduling (1 second per photo) |
| 484 |
queue_timer += (1000 * preloadQueue[i].length); |
| 485 |
} |
| 486 |
|
| 487 |
return this.preloadedImages; |
| 488 |
}; |
| 489 |
|
| 490 |
}; |
| 491 |
|
| 492 |
$.fn.vikDotsSlider = function(methodOrOptions) { |
| 493 |
|
| 494 |
var method = typeof methodOrOptions === 'string' ? methodOrOptions : null; |
| 495 |
|
| 496 |
if (method) { |
| 497 |
var sliderInstances = []; |
| 498 |
|
| 499 |
function getVikDotsSliderInstance() { |
| 500 |
var vikDotsSlider = $(this).data('vikDotsSlider'); |
| 501 |
sliderInstances.push(vikDotsSlider); |
| 502 |
} |
| 503 |
|
| 504 |
this.each(getVikDotsSliderInstance); |
| 505 |
|
| 506 |
var args = (arguments.length > 1) ? Array.prototype.slice.call(arguments, 1) : null; |
| 507 |
var results = []; |
| 508 |
|
| 509 |
function applyMethod(index) { |
| 510 |
var vikDotsSlider = sliderInstances[index]; |
| 511 |
|
| 512 |
if (!vikDotsSlider) { |
| 513 |
if (method == 'preloadImages') { |
| 514 |
// preloadImages is the only method that can be called before instantiating vikDotsSlider |
| 515 |
vikDotsSlider = new VikDotsSlider($(this), {}); |
| 516 |
var result = vikDotsSlider[method].call(vikDotsSlider, $(this)); |
| 517 |
results.push(result); |
| 518 |
return; |
| 519 |
} else { |
| 520 |
console.error('$.vikDotsSlider not instantiated yet'); |
| 521 |
results.push(null); |
| 522 |
return; |
| 523 |
} |
| 524 |
} |
| 525 |
|
| 526 |
if (typeof vikDotsSlider[method] === 'function') { |
| 527 |
var result = vikDotsSlider[method].apply(vikDotsSlider, args); |
| 528 |
results.push(result); |
| 529 |
} else { |
| 530 |
console.error('Method \'' + method + '\' is undefined in $.vikDotsSlider'); |
| 531 |
} |
| 532 |
} |
| 533 |
|
| 534 |
this.each(applyMethod); |
| 535 |
|
| 536 |
return (results.length > 1) ? results : results[0]; |
| 537 |
} else { |
| 538 |
var options = (typeof methodOrOptions === 'object') ? methodOrOptions : null; |
| 539 |
|
| 540 |
function init() { |
| 541 |
var vikDotsSlider = new VikDotsSlider($(this), options); |
| 542 |
|
| 543 |
vikDotsSlider.display(); |
| 544 |
|
| 545 |
$(this).data('vikDotsSlider', vikDotsSlider); |
| 546 |
} |
| 547 |
|
| 548 |
return this.each(init); |
| 549 |
} |
| 550 |
|
| 551 |
}; |
| 552 |
|
| 553 |
})(jQuery); |
| 554 |
|
